Variable-bandwidth model and capacity analysis for aerial communications in the terahertz band
Yükleniyor...
Dosyalar
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE-Inst Electrical Electronics Engineers Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this work, 0.75-10 THz band is explored for non-terrestrial communications, by leveraging the improved atmospheric conditions at various altitudes. A channel model for aerial communications at THz band is proposed to calculate the common flat bands for frequency-selective path gain and the colored noise spectrums, both of which are highly affected by the atmospheric conditions. With capacity computation based on common flat bands, we consider aerial vehicles at different altitudes and distances, under realistic weather and channel fading conditions, due to beam misalignment and also multi path fading. An extensive capacity analysis is presented, considering equal and water-filling power allocation. It is shown that, when there is no fading, capacity for aerial links is several orders of magnitude larger than the sea-level capacity. When ergodic capacity is computed for the fading scenarios, it is shown that the impact of fading vanishes with altitude. Sea-level ergodic capacity is increased by an order of magnitude for drone-to-drone communications, providing several Tbps at 10 m range, while 10s of Tbps is achievable among jet planes and UAVs, and several 100s of Tbps is possible for satellites/cubesats at 1 km under fading, suggesting that THz band is a promising alternative for aerial communications.
Açıklama
Higher Education Commission (HEC)(Higher Education Commission of Pakistan); Scholarship Program, Government of Pakistan
Anahtar Kelimeler
Fading Channels, Atmospheric Modeling, Bandwidth, Drones, Analytical Models, Satellites
Kaynak
IEEE Journal on Selected Areas in Communications
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
39
Sayı
6
Künye
Saeed, A., Gurbuz, O., Bicen, A. O., & Akkas, M. A. (2021). Variable-bandwidth model and capacity analysis for aerial communications in the terahertz band. IEEE Journal on Selected Areas in Communications, 39(6), 1768-1784.
